CVE-2021-28494CWE-287

In Arista's MOS (Metamako Operating System) software which is supported on the 7130 product line, under certain conditions, authentication is bypassed by…

Critical · published September 9, 2021

CVSS v3.1
9.6
EPSS
1%
Percentile
58.6
In the wild
Unconfirmed
What it is

🚨 Unprivileged users can bypass authentication in Arista's MOS software, opening the door to potential chaos in your network! 🔥 Think of this vulnerability as leaving the main entrance to your data center wide open while relying on a flimsy curtain for privacy — anyone can stroll in and have a look around without breaking a sweat. In the worst-case scenario, an attacker could gain unauthorized access to the Web UI, potentially manipulating or seizing control of your network resources. This could lead to data breaches, service disruption, or even unauthorized configuration changes that could wreak havoc on your operations.

Put simply

Think of this vulnerability as leaving the main entrance to your data center wide open while relying on a flimsy curtain for privacy — anyone can stroll in and have a look around without breaking a sweat. This vulnerability occurs when unprivileged users are able to authenticate improperly, allowing them access to the functionality of the MOS software without proper credentials. It specifically affects version MOS-0.34.0 and prior releases on the 7130 product line.

What to do

In the worst-case scenario, an attacker could gain unauthorized access to the Web UI, potentially manipulating or seizing control of your network resources. This could lead to data breaches, service disruption, or even unauthorized configuration changes that could wreak havoc on your operations. To secure your systems, upgrade immediately to the latest version of Arista MOS software that addresses this vulnerability. Additionally, review access controls and ensure that only authorized users can access critical systems. Regular security audits are also recommended to catch any other potential flaws. You've got this! With a quick update and some vigilance, your network can stay secure and fortified. 🛡️

The record
Technical detail
CVSS v3.1
9.6 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00875 · 58.6th percentile
Weakness
CWE-287 · Improper Authentication
Published
2021-09-09T12:46Z
EPSS history
Timeline
  • 09 SEP 12:46Z
    In Arista's MOS (Metamako Operating System) software which is supported on the 7130 product line, under certain conditions, authentication is bypassed by…
    cvelistv5